M2.3 earthquake 1 km WNW of Cherry Grove, Washington

A magnitude 2.3 earthquake struck 1 km WNW of Cherry Grove, Washington on Wed, Aug 9, 2006, 7:32 AM PDT (14:32 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M3.4 37 km NNE of Amboy, Washington. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
2.3	Md, duration	Pacific Northwest Seismic Network	Preferred · Final · ±0.04 · 9 stations
2.3	Md, duration	USGS National Earthquake Information Center	Reviewed

The USGS’s account of the effects of this earthquake.

Felt (II) at La Center and Vancouver. Felt at Ridgefield and Yacolt.

From the USGS event page for uw10698893. U.S. Geological Survey text and figures are in the public domain.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 194 in the 60 days after this one and 113 in the 30 days before it.

The first 60 of 194.

From the USGS Earthquake Hazards Program and its partner networks, event uw10698893 (also filed as usp000eqkf). Read Sun, Oct 4, 2026, 7:02 AM UTC.